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Full text of "The manufacture and properties of iron and steel"

INFLUENCE OF CERTAIN ELEMENTS ON STEEL.
363
harmful effect, while under other possible conditions the result would be less marked.
SEC. XVIIh.—Influence of arsenic.—The effect of arsenic upon steel was investigated several years ago by Harbord and Tucker.* Their conclusions may be summarized as follows:
Arsenic, in percentages not exceeding .17, does not affect the bending properties at ordinary temperatures, but above this per-
TABLE XVII-K.
Effect of Aluminum upon the Physical Properties of Steel.
fl-lnoh'square ingots, made by The Pennsylvania Steel Company, rolled to 2x% inch.
	Heat number.-.	Composition; percent.						Ultimate strength; pounds per square inch.	Elastic limit; pounds per square inch.	Elastic ratio; per cent.	Elongation in 8 inches ; per cen't.	Reduction of area; per cent.
		C.	P.	Si.	Mn.	S.	Al.					
Soft basic open-hearth steels.	1791	.11 .11	.024 .022		.48 .45	.085 .035	.00 £8	48800 56880	83190 41150	68.0 72.4	81.25 18.25	48.'6 29.8
	1792	.11 .11	.010 .011		.45 .41	.019 .023	.00 .45	46440 58440	81640 86900	68.1 69.1	80.00 22.50	49.9 81.5
	1793	.11 .11	.013		.35		.00 .50	47160 53900	38490 88530	71.0 71.5	81.25 27.00,	45.8 88,7,
												
Soft acid open-hearth steels.	8681	.17 .16 .14	.035		.61	.025	.04 .473 .899	58560 63440 64160	89810 42100 89100	67.1 66.4 60.9	80.00 23.00 17.50	45.7 86.3 25.4
												
												
	8686	.14 .14 .12	.059		.53	.021	.03 .46 1.171	65030 67810 67420	43260 47950 48850	66.5 70.7 72,5	24.00 20.00 8.00	46.2 84.0 15.0
												
												
	8688	.12 .12 .18	.084	, • .	.51	.021	.013 .45 .80	55700 59880 61470	89550 . 89100 48710	71.0 65.8 71.1	28.7 21.7 21,2	51.8 40.5 84.2
												
Hard aold open-hearth steels.	8682	.47 .44 .43	.048	.21	.70	.018	.00 .671 1.185	J07450 110550 105100	65930 72420 68080	61.4 65.5 64.8	10.0 9.2 12.5	20.1 17.6 21.0
												
	8683	.54 .47 .43	.044	.81	J5	.020	.00 .87 .94	124040 122080 128040	47830 47680 47440 .	88.6 89.1 87.0	10.0 'TIS"	18.0 8.2 9.4
												
	8684	.40 .86 .83	.040	.26	.67	.028	.01 .54 .90	95010 98375 98720	42740 43050 43150	45.0 48.8 48.7	18.7 14.0 12.5	41.0 24.5 20.4
												
	8685	.40 .88 .34	.046	.30	.63	.031	.00 .52 .73	94700 100055 98480	44610 47240 46910	47.1 47.2 47.6	16.2 18.7 12.5	31.8 24.1 17.5
												
												
	8680	.42 .40 .34	.040	.21	.71	.025	.00 .81 .60	90900 94560 96680	53550 69190 69460	58.9 62.6 61.5	15.5' 16.0 14.7	22.6 89.7 26.4
												
* On the Effect of Arsenic on Mild Steel.   Journal L and S. 7., Vol. 1,1888, p. 183.